Merge tag 'm68k-for-v5.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git...

[sfrench/cifs-2.6.git] / include / uapi / linux / fanotify.h

diff --git a/include/uapi/linux/fanotify.h b/include/uapi/linux/fanotify.h
index fbf9c5c7dd59ab6eb765c35e0ef9040d56e07c02..64553df9d7350d03b50e62f6419a78df1bbe64e3 100644 (file)
--- a/include/uapi/linux/fanotify.h
+++ b/include/uapi/linux/fanotify.h
@@ -51,6 +51,7 @@
 #define FAN_ENABLE_AUDIT       0x00000040
 
 /* Flags to determine fanotify event format */
+#define FAN_REPORT_PIDFD       0x00000080      /* Report pidfd for event->pid */
 #define FAN_REPORT_TID         0x00000100      /* event->pid is thread id */
 #define FAN_REPORT_FID         0x00000200      /* Report unique file id */
 #define FAN_REPORT_DIR_FID     0x00000400      /* Report unique directory id */
@@ -123,6 +124,7 @@ struct fanotify_event_metadata {
 #define FAN_EVENT_INFO_TYPE_FID                1
 #define FAN_EVENT_INFO_TYPE_DFID_NAME  2
 #define FAN_EVENT_INFO_TYPE_DFID       3
+#define FAN_EVENT_INFO_TYPE_PIDFD      4
 
 /* Variable length info record following event metadata */
 struct fanotify_event_info_header {
@@ -148,6 +150,15 @@ struct fanotify_event_info_fid {
        unsigned char handle[0];
 };
 
+/*
+ * This structure is used for info records of type FAN_EVENT_INFO_TYPE_PIDFD.
+ * It holds a pidfd for the pid that was responsible for generating an event.
+ */
+struct fanotify_event_info_pidfd {
+       struct fanotify_event_info_header hdr;
+       __s32 pidfd;
+};
+
 struct fanotify_response {
        __s32 fd;
        __u32 response;
@@ -160,6 +171,8 @@ struct fanotify_response {
 
 /* No fd set in event */
 #define FAN_NOFD       -1
+#define FAN_NOPIDFD    FAN_NOFD
+#define FAN_EPIDFD     -2
 
 /* Helper functions to deal with fanotify_event_metadata buffers */
 #define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata))